Same shit with American custom forms. On the one hand, they threaten you with Armageddon if you fill out the form incorrectly, on the other hand, they only allow plain letters, numbers, and a handful of special characters. Nobody there has the capacity of the mind that maybe a name cannot be correctly represented with that tiny subset of characters. So it is simply impossible to fill out that form without breaking the law. And it is a customs form, so they should know that people filling it out are most likely foreigners.